Node.js

Question 1

used to develop

Answer 1

I/O intensive web applications like video streaming sites
single-page applications
data intensive real-time applications
json apis based applications

Question 2

what is Node.js

Answer 2

server-side platform built on Google Chrome’s JavaScript Engine (V8 engine)

Question 3

event driven

non blocking

Answer 3

lightweight
efficient
perfect for data intensive real-time applications that run across distributed devices

Question 4

asynchronous and event driven

Answer 4

non blocking

node.js based server never wiats for an api to return data

Question 5

single threaded

Answer 5

but highly scalable

Question 6

it is not advisable to use node.js for ………….

Answer 6

cpu intensive applications

Question 7

to load required modules use

Answer 7

require

Question 8

repl

Answer 8

read
eval
print
loop

Question 9

read

Answer 9

reads user’s input
parses the input into javascript data structure
and stores in memory

Question 10

eval

Answer 10

takes and evaluates the data structure

Question 11

print

Answer 11

prints the result

Question 12

loop

Answer 12

loops the above command until the user presses ctrl-c twice

Question 13

start REPL

Answer 13

run node on terminal